java webservice開發入門之一

Axis支援三種web service的部署和開發，分別為：
1、Dynamic Invocation Interface ( DII)
2、Stubs方式
3、Dynamic Proxy方式[@more@]

一、Axis安裝 1、環境 J2SE SDK 1.3 or 1.4: 我使用 1.4.2 Servlet Container: 我使用的Tomcat 5.0

2、到 網站下載Axis安裝包

3、解壓縮安裝包，將Axis_UNZIP_PATHAxis-versionwebapps下的Axis包複製到TOMCAT_HOMEwebapps下，以下約定Axis_HOME為該TOMCAT_HOMEwebappsAxis目錄

4、啟動tomcat,訪問 檢查安裝是否成功

5、以上步驟執行成功，可以開發webservice例子了

Axis支援三種web service的部署和開發，分別為：

1、Dynamic Invocation Interface ( DII)

2、Stubs方式

3、Dynamic Proxy方式

二、編寫DII(Dynamic Invocation Interface )方式web服務

1.編寫服務端程式HelloClient

public class HelloClient
{
public String getName(String name)
{
return "hello "+name;
}
}

2、將原始碼複製到Axis_HOME下，重新命名為 HelloClient.jws

3、訪問連線，頁面顯示Axis自動生成的wsdl

4、編寫訪問服務的客戶端 TestHelloClient.java

import org.apache.Axis.client.Call;
import org.apache.Axis.client.Service;
import javax.xml.namespace.QName;
import javax.xml.rpc.ServiceException;
import java.net.MalformedURLException;
import java.rmi.RemoteException;

public class SayHelloClient2
{
public static void main(String[] args)
{
try
{
String endpoint =
"";

Service service = new Service();
Call call = null;

call = (Call) service.createCall();

call.setOperationName(new QName(
"",
"getName"));
call.setTargetEndpointAddress
(new java.net.URL(endpoint));

String ret = (String) call.invoke(new Object[]
{"zhangsan"});
System.out.println("return value is " + ret);
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
}

三、編寫Dynamic Proxy方式訪問服務

1、編寫部署服務端程式，同上邊DII方式，本次仍使用上邊部署的HelloClient

2、編寫代理介面

public interface HelloClientInterface
extends java.rmi.Remote
{
public String getName(String name)
throws java.rmi.RemoteException;
}

3、編寫並執行客戶端程式TestHelloClient.java

import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;
import java.net.URL;
import javax.xml.namespace.QName;

public class TestHelloClient
{
public static void main(String[] args)
{
try
{
String wsdlUrl =
"";
String nameSpaceUri =
"";
String serviceName = "HelloClientService";
String portName = "HelloClient";

ServiceFactory serviceFactory =
ServiceFactory.newInstance();
Service afService =
serviceFactory.createService(new URL(wsdlUrl),
new QName(nameSpaceUri, serviceName));
HelloClientInterface proxy = (HelloClientInterface)
afService.getPort(new QName(
nameSpaceUri, portName),
HelloClientInterface.class);
System.out.println
("return value is "+proxy.getName("john") ) ;
}catch(Exception ex)
{
ex.printStackTrace() ;
}
}
}

四、編寫wsdd釋出web服務，編寫stub client訪問web服務

1、編寫服務端程式server,SayHello.java，編譯server.SayHello.java

package server;
public class SayHello
{
public String getName(String name)
{
return "hello "+name;
}
}
2.編寫LogHandler.java
import org.apache.Axis.AxisFault;
import org.apache.Axis.Handler;
import org.apache.Axis.MessageContext;
import org.apache.Axis.handlers.BasicHandler;

import java.util.Date;

public class LogHandler
extends BasicHandler
{
public void invoke
(MessageContext msgContext)
throws AxisFault
{
/** Log an access each time
we get invoked.
*/
try {
Handler serviceHandler
= msgContext.getService();

Integer numAccesses =
(Integer)serviceHandler.getOption("accesses");
if (numAccesses == null)
numAccesses = new Integer(0);
numAccesses = new Integer
(numAccesses.intValue() + 1);
Date date = new Date();
String result =
date + ": service " +
msgContext.getTargetService() +
" accessed " + numAccesses + " time(s).";
serviceHandler.setOption
("accesses", numAccesses);
System.out.println(result);
} catch (Exception e)
{
throw AxisFault.makeFault(e);
}
}
}

3、編寫wsdd檔案

deploy.wsdd
""
xmlns:java=
"">

provider="java:RPC">



value="server.SayHello"/>
value="*"/>

3、將編譯後的檔案複製到Axis_HOME/WEB-INF/classes下，如：D:tomcatwebappsAxisWEB-INFclasses

4、釋出服務：

java org.apache.Axis.client.AdminClient deploy.wsdd

5、生成client stub檔案

a:方式1

將SayHello.java複製到Axis_HOME/下，重新命名為SayHello.jws，

執行下面的命令生存client stub

java org.apache.Axis.wsdl.WSDL2Java
-p client
/Axis/services/SayHello.jws?wsdl

b:方式2

執行如下命令生成SayHello.wsdl

java org.apache.Axis.wsdl.Java2WSDL
-oSayHello.wsdl -l
/Axis/services/SayHello -nsayhello server.SayHello

執行如下命令生成client stub

java org.apache.Axis.wsdl.WSDL2Java
SayHello.wsdl -p client

生成的stub client檔案列表為：

1.SayHello.java

2.SayHelloService.java。

3.SayHelloServiceLocator.java

4.SayHelloSoapBindingStub.java

6、編寫客戶端程式，編譯並執行

public class SayHelloClient
{
public static void main(String[] args)
{
try
{
SayHelloService service = new client.
SayHelloServiceLocator();
client.SayHello_PortType
client = service.getSayHello();
String retValue=client.getName("zhangsan");
System.out.println(retValue);
}
catch (Exception e)
{
System.err.println
("Execution failed. Exception: " + e);
}
}
}

您也可以寫server-config.wsdd

xmlns:java="">

value="org.apache.axis.attachments.AttachmentsImpl"/>

這個更好用些